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Plowman, 356 - Total peripheral resistance (TPR)
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Plowman, 356 - Total peripheral resistance (TPR)

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Questions and Answers

What is the primary cause of vasodilation in active muscles during exercise?

  • Increased metabolism
  • Increased blood flow
  • Local chemical factors (correct)
  • Decreased resistance

    • What is the implication of decreased resistance due to vasodilation in active muscles during exercise?

  • Decreased blood flow
  • Decreased oxygen availability
  • Increased blood flow (correct)
  • Increased oxygen availability

    • How does decreased resistance due to vasodilation in active muscles during exercise affect mean arterial pressure (MAP)?

  • Has no effect on it
  • Decreases it (correct)
  • Increases it
  • Causes it to fluctuate

    • What determines the increase in MAP during dynamic aerobic exercise?

    <p>Relative changes in cardiac output and TPR</p> Signup and view all the answers

    What happens to myocardial oxygen consumption during dynamic aerobic exercise?

    <p>It increases</p> Signup and view all the answers

    What is the rate-pressure product (RPP)?

    <p>The product of heart rate and systolic blood pressure</p> Signup and view all the answers

    What does an increase in RPP during exercise reflect?

    <p>Increased myocardial oxygen demand</p> Signup and view all the answers

    What is the effect of dynamic aerobic exercise on total peripheral resistance (TPR)?

    <p>It decreases</p> Signup and view all the answers

    What are the local chemical factors that cause vasodilation in active muscles during exercise?

    <p>Lactate and K+</p> Signup and view all the answers

    What is the effect of decreased resistance due to vasodilation in active muscles during exercise on mean arterial pressure (MAP)?

    <p>Decreases it dramatically</p> Signup and view all the answers

    What is the implication of increased myocardial oxygen consumption during dynamic aerobic exercise?

    <p>Increased myocardial oxygen demand</p> Signup and view all the answers

    What is the rate-pressure product (RPP) a measure of during exercise?

    <p>Myocardial oxygen demand</p> Signup and view all the answers

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